Cyp27a1 MGI Mouse Gene Detail - MGI:88594 - cytochrome P450, family 27, subfamily a, polypeptide 1

Symbol

Cyp27a1
Name

cytochrome P450, family 27, subfamily a, polypeptide 1
Synonyms

1300013A03Rik, cholesterol 27 hydroxylase, Cyp27

Feature Type

protein coding gene
IDs

MGI:88594
NCBI Gene: 104086
Alliance

genome feature page
Transcription Start Sites

9 TSS

Sequence Map

Chr1:74752733-74777051 bp, + strand
From Ensembl annotation of GRCm39
View this region in JBrowse
Genome Browsers

Ensembl | UCSC | NCBI

Genetic Map

Chromosome 1, 38.54 cM, cytoband C3
Mapping Data

5 experiments

SNPs within 2kb

644 from dbSNP Build 142
Strain Annotations

19

For selected strains:

Strain	Gene Model ID	Feature Type	Coordinates
C57BL/6J	MGI_C57BL6J_88594	protein coding gene	Chr1:74752311-74777056 (+)
129S1/SvImJ	ENSMUSG00200033707	protein coding gene	Chr1:72412724-72437070 (+)
A/J	ENSMUSG00195010159	protein coding gene	Chr1:71837531-71861867 (+)
AKR/J	ENSMUSG00220010071	protein coding gene	Chr1:71983415-72007737 (+)
BALB/cJ	ENSMUSG00180015794	protein coding gene	Chr1:72099460-72123785 (+)
C3H/HeJ	ENSMUSG00175015778	protein coding gene	Chr1:72237905-72262239 (+)
C57BL/6NJ	ENSMUSG00215014071	protein coding gene	Chr1:72144796-72169118 (+)
CAROLI/EiJ	MGP_CAROLIEiJ_G0014272	protein coding gene	Chr1:68260662-68286439 (+)
CAST/EiJ	ENSTCUG00005027621	protein coding gene	Chr1:71859051-71884912 (+)
CBA/J	ENSMUSG00210036594	protein coding gene	Chr1:71922094-71946415 (+)
DBA/2J	ENSMUSG00185030852	protein coding gene	Chr1:73016126-73040441 (+)
FVB/NJ	ENSMUSG00205027003	protein coding gene	Chr1:71594383-71618697 (+)
JF1/MsJ	ENSUMUG00000005138	protein coding gene	Chr1:71908737-71935771 (+)
LP/J	ENSMUSG00230009048	protein coding gene	Chr1:73005864-73030204 (+)
NOD/ShiLtJ	ENSMUSG00190024015	protein coding gene	Chr1:72147892-72172223 (+)
NZO/HlLtJ	ENSMUSG00225040483	protein coding gene	Chr1:76220994-76245339 (+)
PWK/PhJ	ENSLUMG00010013479	protein coding gene	Chr1:71492186-71518891 (+)
SPRET/EiJ	ENSMSPG00010016121	protein coding gene	Chr1:73582395-73609462 (+)
WSB/EiJ	ENSIUOG00005012544	protein coding gene	Chr1:71769750-71794071 (+)

Human Ortholog

CYP27A1, cytochrome P450 family 27 subfamily A member 1

Vertebrate Orthologs

2

Vertebrate Orthology Source

Alliance of Genome Resources

Human Ortholog

CYP27A1, cytochrome P450 family 27 subfamily A member 1
Synonyms

CP27, CTX, CYP27
Links

HGNC:2605

NCBI Gene ID: 1593

UniProt: Q02318
Chr Location

2q35; chr2:218781738-218815293 (+) GRCh38

MGI Vertebrate Homology

Cyp27a1 stringent orthology
1 human;1 mouse;1 rat
HCOP

vertebrate homology predictions: CYP27A1
Gene Tree

Cyp27a1

Diseases

1 with human CYP27A1 associations

				Human Disease	Mouse Models
				cerebrotendinous xanthomatosis IDs cerebrotendinous xanthomatosis DOID:4810 MESH:D019294 NCI:C84628 OMIM:213700 ORDO:909 UMLS_CUI:C0238052

Click on a disease name to see all genes associated with that disease.

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Phenotype Summary

39 phenotypes from 2 alleles in 3 genetic backgrounds
4 phenotypes from multigenic genotypes
57 phenotype references

Phenotype Overview

Blue squares indicate phenotypes directly attributed to mutations/alleles of this gene.

adipose tissue	behavior/neurological	cardiovascular system	cellular	craniofacial	digestive/alimentary system	embryo	endocrine/exocrine glands	growth/size/body	hearing/vestibular/ear	hematopoietic system	homeostasis/metabolism	integument	immune system	limbs/digits/tail	liver/biliary system	mortality/aging	muscle	nervous system	pigmentation	renal/urinary system	reproductive system	respiratory system	skeleton	taste/olfaction	neoplasm	vision/eye

Click cells to view annotations.

All Mutations and Alleles

14
Chemically induced (other)

1
Endonuclease-mediated

5
Radiation induced

2
Targeted

6
Genomic Mutations

3 involving Cyp27a1
Incidental Mutations

Mutagenetix , APF
Find Mice (IMSR)

31 strains or lines available
Comparison Matrix

Gene Expression + Phenotype

Homozygous null allele show hepato- and adrenomegaly, reduced bile acid synthesis, increased cholesterol 7alpha-hydroxylase activity and 7alpha-hydroxycholesterol levels, slightly higher 25-hydroxyvitamin D levels, and altered hepatic fatty acid, triacylglycerol, and adrenal cholesterol homeostasis.

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All GO Annotations

55
GO References

16

Molecular Function

carbohydrate derivative binding	cytoskeletal protein binding	DNA binding	enzyme regulator	hydrolase	ligase	lipid binding	oxidoreductase	RNA binding	signaling receptor activity	signaling receptor binding	transcription	transferase	transporter

Biological Process

carbohydrate derivative metabolism	cell differentiation	cell population proliferation	cellular component organization	DNA-templated transcription	establishment of localization	homeostatic process	immune system process	lipid metabolic process	programmed cell death	protein metabolic process	response to stimulus	signaling	system development

Cellular Component

cell projection	cytoplasmic vesicle	cytoskeleton	cytosol	endoplasmic reticulum	endosome	extracellular region	Golgi apparatus	mitochondrion	membraneless organelle	nucleus	organelle envelope	organelle lumen	plasma membrane	protein-containing complex	synapse	vacuole

Click cells to view annotations.

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Expression Overview

GXD's primary emphasis is on endogenous gene expression during development. Click on grid cells to view annotations.

Blue cells = expressed in wild-type.
Gray triangles = other expression annotations only
(e.g. absence of expression or data from mutants).

early conceptus	embryo ectoderm	embryo endoderm	embryo mesoderm	embryo mesenchyme	extraembryonic component	alimentary system	auditory system	branchial arches	cardiovascular system	connective tissue	endocrine system	exocrine system	hemolymphoid system	integumental system	limbs	liver and biliary system	musculoskeletal system	nervous system	olfactory system	reproductive system	respiratory system	urinary system	visual system

Click cells to view annotations.

Assay Results

663
Tissues

43
cDNA Data

62
Literature Summary

7

Images

Tissue x Stage Matrix

Comparison Matrix

Gene Expression + Phenotype

Other Mouse Links

Allen Institute

GEO

Expression Atlas
Other Vertebrate Links

Xenbase cyp27a1, cyp27a1.2, cyp27a1.3, cyp27a1.5, XB1001094

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All Sequences

40
RefSeq

6
UniProt

2
CCDS

CCDS15054.1

Ensembl

ENSMUSG00000026170 (Evidence)
NCBI Gene

104086

			Length	Strain/Species	Flank
genomic	ENSMUSG00000026170	Ensembl Gene Model \| MGI Sequence Detail	24319	C57BL/6J	± kb
transcript	ENSMUST00000027356	Ensembl \| MGI Sequence Detail	1892	Not Applicable
polypeptide	ENSMUSP00000027356	Ensembl \| MGI Sequence Detail	533	Not Applicable

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UniProt

2 Sequences
Protein Ontology

PR:000006110 cytochrome P450 27, mitochondrial

(term hierarchy)
EC

1.14.15.15
InterPro Domains

IPR001128 Cytochrome P450

IPR017972 Cytochrome P450, conserved site

IPR002401 Cytochrome P450, E-class, group I

IPR050479 Cytochrome P450, families 11 and 27

IPR036396 Cytochrome P450 superfamily
GlyGen

Q9DBG1 1 site, 1 O-linked glycan (1 site)

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All nucleic 71

Genomic 4

cDNA 62

Primer pair 5

Microarray probesets 3

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MGD-MRK-2311, MGI:1922018

Summaries

All 135

Developmental Gene Expression 7

Gene Ontology 16

Phenotypes 57
Earliest

J:134667 Roderick TH, et al., Two radiation-induced chromosomal inversions in mice (Mus musculus). Proc Natl Acad Sci U S A. 1970 Oct;67(2):961-7
Latest

J:389099 Lin H, et al., The enterohepatic bile acid axis: from perinatal programming to metabolic collapse. Biochem Biophys Res Commun. 2026 Jul 9;830:154261

TSS for Cyp27a1:

(View these features in JBrowse)

Transcription Start Site	Location	Distance from Gene 5'-end
Tssr7449	Chr1:74752288-74752301 (+)	-438 bp
Tssr7450	Chr1:74752302-74752325 (+)	-419 bp
Tssr7451	Chr1:74752332-74752365 (+)	-384 bp
Tssr7452	Chr1:74752369-74752380 (+)	-358 bp
Tssr7453	Chr1:74752429-74752457 (+)	-290 bp
Tssr7454	Chr1:74752462-74752491 (+)	-256 bp
Tssr7455	Chr1:74752710-74752727 (+)	-14 bp
Tssr7456	Chr1:74755430-74755434 (+)	2,699 bp
Tssr7457	Chr1:74771184-74771201 (+)	18,460 bp

Contributing Projects: Mouse Genome Database (MGD), Gene Expression Database (GXD), Mouse Models of Human Cancer database (MMHCdb) (formerly Mouse Tumor Biology (MTB)), Gene Ontology (GO)
Citing These Resources Funding Information Warranty Disclaimer, Privacy Notice, Licensing, & Copyright Send questions and comments to User Support.	last database update 09/08/2026 MGI 6.24